Assembling press



"Jan. 2, 1923.

, MIMI-(M93;

J. L. REED.

ASSEMBLING PRESS.

FILED APR.30, 1921. 2 SHEETS-SHEET Inxfenm Jo /622 Z fieea/ Fat-ented can, 2, Eg -3? tra ns JOHN L. 0.? LEZT'KGNE, ILLINOIS, ASSIGNQR TQALUMINUM PRODUCTS COML ANY, OF CHICAGO, ILLINOIS, A COBPGRATIUN OFILLINOIS.

ASSEMBLING PRESS.

Application filed. April 30,

To all whom it may conocm Be it known that l, Jenn .1. Reno, a citi- Zenof the United t ltates, residing at Lemont, in the county of Cook andState of .lllinois, have invented certain new and use ful Improvementsin Assembling Presses, of which the following is a. specification.

My invention relates to a machine for assembling perforated parts insecurely attached relation to a carrying tubular part, and in some ofits features has to do more particularly with assembling and securingtogether the: parts of a percolator liner.

ltn coffee percolators it is common to provide a liner comprising aspherically arched foot opening to and attached to the lower extremityof a vertical stem or tube and to attach to the tube below the upper endthereof a perforated coffee-basket of cup-shape. By the mechanismhereinafter described one may, with a single operation of the press, [inthe several parts in desired assembled relation, heading the tube aboveand below the bottom of the coffee-basket and above and below the metalof the foot.

in general the object of my invention is to provide assembling machineor press that is simple, efficient and durable, in which press theseveral parts of the liner may easily and quickly be placed in looselyassembled relation and securely and adequately held in position for thesucceeding operations; and by the operation of which press through asingle rapid stroke the tube may be re-shaped to throw out the retainingbeads that will permanently and firmly attach the basket and footthereto in precisely the desired relation, all with minimum possibilityfor error or failure to produce a perfect assembled product.

With a view to attaining these and other objects which will becomeapparent to those skilled in the art from the following description, myinvention consists in the features of construction and combinations andarrangements of parts hereinafter set forth and claimed.

in the drawings, wherein l have illus trated a single embodiment of myinvention, Fig. 1 is a side elevation, with parts broken away, showingthe assembly press; Fig. 2 is a fragmentary section on line 22 of Fig.1; Fig. 3 is a fragmentary view taken on line 33 of Fig. 1; Fig. 4: is aversection through a complete percolator liner in the assembling of theparts whereof the press is employed; Fig. 5 is a central verticalsection, from front to rear, through the press in condition of use; andFig. 6 is a vertical section in a transverse plane, on a somewhatenlarged scale, taken generally on line 6-6 of Fig. 5.

The vertical frame 10 carries in its guides ii a plunger 12 having ahead 13 to cooperate with the upper end of the liner-tube. Any simplemeans may be provided for forcibly depressing the head, such as handlever 14 pivoted at 15 to the plunger and fulcrumed 16 on the swinginglink 17 that finds bearing in the frame, a counterweight 18 beingsuitably connected with the handle normally to hold the plunger and headin raised position.

0n the over-hung base portion 20 of the frame are arranged thefoot-blocks 21 and a pressure clamp structure 22, the former to receivethe prepared foot of the liner and the bottom extremity of the tube onwhich said foot will loosely be assembled, and the pressure clamp toreceive the mid-portion of the tube and properly position it, togetherwith the basket elements loosely strung thereon ready for the operationof the plunger head. I

The structure comprises two gates or jaws 23 and 23 jointly pivoted onand slidable on hinge-bolt 24: that is encircled by spring 25 normallyraising the hinged end of the jaws to a height determined by theadjusting nut 26 on the bolt. When swung open these jaws expose thefoot-block 21 the cylindrical stem of which extends through the base 20and the head of which, rounded for substantial conformity with theunderside of the percolator foot extends, as at 21, above the base inwhich is cut a recess 20 neatly to receive the margin of the liner foot.In the center of this block is a recess 27 in which is snugly mounted acentering pin 28 having a shaper-point 29 protruding through the orificeof the recess, the verti cal position of the pin being variable byadjusting bolt 30 having a lock nut 31. When one loosely assembles aliner foot a on the bottom of a. suitable section of stock for tube Z)and places the two on the foot-block, the tube-end encircles the shapingpin 29 down to the line where the latter begins its shaping-flare 29,while the foot-blank is elevated slightly: above the surface. of thefoot-block by resilient means such. as the small rubber posts 32 thatnormally protrude slightly above 1 the spherical top surface of .theblock. One may-then .close thegatesor jaws of the pressure clamp 22 toretain these parts in the stated loosely-assembled relation.

Each pressure jaw has therein a groove forming halfof the verticalstem-receptive aperture ifi, lipped at top and bottom by detachable wearplates 34} and 35, the upper plate 34: being preferably flanged as at 34to extend-above the top of the jaw and afford guidance,forpositioningpins 36 protruding upwardly through suitable apertures in theseflanges,the'bottom heads of the pins 36 being arranged in cylindrical recessesformed in therespectivev jaws and held normally elevated byrecess-contained springs 38. Neither. jaw may be closed or moved inwardbeyond the intended tubeepositioning position because of the provisionof a stoppin 89 intervening between the jaws, which aresuitably recessedat 39 to receive it.

When. closed the jaws may be locked together by the lock bar ll) pivotedin one of them, entering a recess in the other and 'pr0 vided with alockingthumb-nut 40'. The jaws, thus locked togethen preferably re- Iceive s ring su ort at their front or free ends one round headed bolt 41that passes through, the base 20, is sustained by spring 42+andcarriesadjusting nuts l1 .at its bottomf to {limit its vertical,spring-impelled movement. I

If one slipson the upper end of the tube stock apreformedcoffee-basket 0and preferably its strengthening-washers d, these parts are initiallysupported, in position somewhatspaced above the plates 34, by thepring-pressed pins 36,:readyfor the operation 0f the plunger-head.

.Illhe plunger head 13 preferably includes a headri ng 43 the conicallower end 48 of whichwill just entenat itsbase, the baslret c, thi sring being threaded onto the lower .portionl2 of the plunger 12 with itstaperedboreis holding together two plunger 1 end members 4.5 thatmeet ina vertical plane and that arethus made separable for convenienceinattaching the wear plates 46 at their ends. In these plunger j aws ismade a bore 47 to receive the upper end of the tube bsothat the end ofthe bore may, when the plunger is depressed, thrust vertically downwardon the tube. The wear plates as sur round the mouth of the bore andthese are preferably flanged and are arranged to afford; .guidance forpositioning pins 48 ressed-downward b s rin'ps as seated in recesses inthe jaws.

a When, with the parts of the liner, a, Z), 0 and d, loosely assembledas heretofore de- 12by, meansof handle 14, therecess 47 rebulgeoutwardly at every point where itis the vertically and uniformly appliedpressure on the tube causes the tube to tend to free fromcircumferential restraint. Where a bulge-tendency isthusmanifestedibetween the wear-plates or die-lips 34and' i6 ofthe pressureclamp and plunger, respectively, the nietalflin' the center of thisbulge-zone. is restrained. by the encompassing basket cxthat isaccurately positioned, initially,mid-way between these twoactivepressure members. Hence the bulge-tendency at this point manifestsitself in the "formation of two beads, b and?) respectively above' andbelowthe basket-parts, and as the pressure is continued thesebead-bulges are pinched as snugly the setting); of the device maypermit, thebasketrpositioning pins -36 .and 48 yielding as the actiongoes forward. Atthe bottom of the tube a generally-similar actiontakesplace. the extreme'bottom lip of the tube extending to expandaround'the shapins-base of the pin-point 29 until it =meets the wall ofthe recess 27in the foot-block, forming a bottom'flange or bead Z),while above the yieldingly upheld foot a, head 72 is formed. Theyielding mounting of the pressure clanipenal'iles it to move verticallyto accommodate the formation of; the bottom-beads simultaneously withtheformation of the basket-retaining beads.

'The association of press-parts enabling and compelling thejformation ofretainingbeads in pairs at spaced intervals along the stock, theoperative certainty of the machine and the simplicity of its functioningto permit assembly and its single-stroke final operation all contributeto'the desired results that a deft operator can permanently assemble theliner-parts with great" rapidity and with. minimum possibilityofspoilage.

lt will be understood that while'I have fully described in somekleta'ila'particular 115 embodiment of my invention for use.1in:,the assemblyofthe parts of a particular article of manufacture, I do notintendtherebyto limit my invention in its broader aspectsto the specificconstruction and particular use 120 vof the mcehanisn' but thatmanydepartures in specific embodiments of the invention may be made withoutdeparture from itsspirit, within the scope of the appendeclclaims.

lrlaim; I

l. in an assembly press, opposed means for applying endwise pressure ona tube, circumferential restraining means for actmg on portions of saidtube separated by tioning an apertured part that is to be beadsecured tosaid tube in a zone approximately intercepting the center of said space,whereby to occasion the formation of double beading, above and belowsaid zone.

in a machine ior permanently assembling apertured parts on a single tubeat spaced intervals,relatively movable opposed means for exertingendwise pressure on the tube, an endwise movable pressure clamp forcircumferentially restraining the tube between the transverse planes ofparts-attachments, and means for normally positioning parts to beattached in their looseassembly relation to the tube in planes some- Iwhat spaced from the extremities of said pressure clamp.

3. In a machine of the character described, the combinacion of a plungerhaving its end formed for engagement with a tube, an opposing basehaving a part formed for engagement with the tube, an interveningspring-sustained pressure member having bore for tubereception, andyielding means "for supporting a part that is to be attached to the tubein position initiallyspaced above said pressure member.

a. A machine set forth in claim 3 wherein the pressure member comprisesa pair of gates separated on a plane intersectthe tube-bore, said gatesbeing pivotally mounted to permit t eir opening to expose thetube-receptive part the base.

5. The structure defined in claim 4, wherein means are provided forlocking the gates together in tube-embracing position.

6. The structure as defined in claim 5,

wherein stop means is provided on the base to define the locked positionof the gate.

In a. device of the character described, the combination of a framehaving a base below and plunger-guides above, tube-receptive means onthe base, a plunger in said guides having tube-receptive means aligningwith the means on the base, means for depressing said plunger totube-engaging position and further to tube-compressing position, and,between said base and plunger, a tube-receptive pressure structurenormally spring-sustained in position afl'ording, between it and thetube-receptive portions of the base and plunger when the latter is intube contacting position, spaces for the reception of parts to beattached to the tube and clearance for the extrusion of beads above andbelow such parts to be attached.

8. A structure as defined in claim 7, wherein the tube-receptive meansof the base includes a pin for centering and shaping the lower end ofthe tube.

9. A structure as set forth in claim 7, wherein the base structure andthe pressure structure are provided with yielding means for supportingparts to be attached to the tube in position substantially mid-Way ofthe height of the clearance spaces for beadextrusion.

10. A structure as defined in claim 7, wherein the tube-receptivepressure structure comprises a pair of complemental gates meeting in aplane intersecting the tubebore, and means for latching the gates inclosed position.

JOHN L. REED.

